Insulating device



FIG. 1 is a top, front, left perspective view of an insulating device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof; and,

FIG. 5 is a top view thereof.

The broken lines immediately adjacent to the shaded area represent unclaimed boundaries of the design. The broken lines showing the remainder of the insulating device are for the purpose of depicting environmental subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for an insulating device, as shown and described. 